Updating CronJob API version for Cloud Platform - removed Kubernetes v1.25
The batch/v1beta1 API version of CronJob is deprecated as of Kubernetes release v1.21, and will no longer served as of v1.25.
Cloud Platform users must ensure any CronJob manifests are migrated to use the batch/v1 API version, which is supported on our current cluster version (v1.30 as of writing).
Further details can be found within the Kubernetes deprecation guide
How to check and replace the deprecated apiVersion
Prerequisite: Install pluto to find out whether any of the manifest has any of the deprecated APIs.
brew install FairwindsOps/tap/pluto
To check if you are using deprecated apiVersion, run the following command:
pluto detect-all-in-cluster --namespace <your namespace>
If there is any deprecated apiVersion of CronJob, the output will look like this:
0928 17:32:43.721283 34578 request.go:697] Waited for 1.045015006s due to client-side throttling, not priority and fairness, request: GET:https://DF366E49809688A3B16EEC29707D8C09.gr7.eu-west-2.eks.amazonaws.com/apis/mutations.gatekeeper.sh/v1beta1?timeout=32s
E0928 17:32:44.561983 34578 discovery_api.go:117] Failed to retrieve: /v1, Resource=bindings the server does not allow this method on the requested resource
E0928 17:32:44.791255 34578 discovery_api.go:117] Failed to retrieve: authorization.k8s.io/v1, Resource=localsubjectaccessreviews the server does not allow this method on the requested resource
NAME KIND VERSION REPLACEMENT REMOVED DEPRECATED REPL AVAIL
test-cronjob CronJob batch/v1beta1 batch/v1 true true true
For resources deployed using helm chart, the above list shows that the helm manifest deployed has the deprecated API version irrespective of the resource exists in the cluster.
Update apiVersion as the following example and apply the manifest:
apiVersion: batch/v1
kind: CronJob
metadata:
name: hello
spec:
schedule: "1 2-14 * * 0-1,5-6"
successfulJobsHistoryLimit: 1
failedJobsHistoryLimit: 1
jobTemplate:
spec:
ttlSecondsAfterFinished: 100
template:
spec:
containers:
- name: hello
image: bitnami/nginx
args:
- /bin/sh
- -c
- date; echo "Hello, World!"
restartPolicy: OnFailure
Run the following command to check if the manifest is updated:
pluto detect-all-in-cluster --namespace <your namespace>
For additional information on creating CronJobs see here